Acta mathematica scientia,Series A ›› 2026, Vol. 46 ›› Issue (5): 1857-1883.

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Local Structure-Preserving Algorithms for the Nonlinear Schrödinger Equation with Delta Potential

Jialing Wang*(), Shuhui Zou   

  1. School of Mathematics and Statistics, Nanjing University of Information Science and Technology, Nanjing 210044; Center for Applied Mathematics of Jiangsu Province, Nanjing University of Information Science and Technology, Nanjing 210044; Jiangsu International Joint Laboratory of System Modeling and Data Analysis, Nanjing University of Information Science and Technology, Nanjing 210044
  • Received:2025-04-01 Revised:2025-10-21 Online:2026-10-26 Published:2026-09-07
  • Contact: Jialing Wang E-mail:wjl19900724@126.com
  • Supported by:
    Special Project on High-Quality Math & Physics Textbook Reform of Jiangsu Undergraduate Universities(2025JYSLKJ027);NSFC(11801277);NSFC(12426524)

Abstract:

This paper focuses on a special class of nonlinear Schrödinger equation with Delta potential. Based on the weak multisymplectic form, we systematically establish a unified framework for constructing the locall structure-preserving algorithms in the weak multisymplectic sense using the concatenating method. We successfully develop four multi-symplectic algorithms and two local energy-preserving algorithms, whose local and global conservation laws in the weak sense are also discussed afterwards. These algorithms are independent of boundary conditions and can be applied to any partial differential equations satisfying the weak multi-symplectic form. Numerical experiments demonstrate the excellent computational performance of the proposed algorithm. The relevant theoretical framework and numerical examples can be directly applied to postgraduate teaching courses on numerical solutions of partial differential equations, providing typical teaching cases for talent cultivation in computational mathematics.

Key words: nonlinear Schrödinger equation with Delta potential, weak multi-symplectic form, multi-symplectic algorithm, local energy-preserving algorithm

CLC Number: 

  • O241.8
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